Means for opening fishing nets in width and height



Oct. 20, 1925. 1,557,728

' A. v. A. ROBERT MEANS FOR OPENING FISHING NETS IN WIDTH AND HEIGHT Filed Feb. 28. 1824 2 Shanta-Sheet 1 Oct. 20 1925 A. V. A. ROBERT MEANS FOR OPENING FISHING NETS IN WIDTH AND HEIGHT 2 Sheets-Sheet 2 Filed Feb. 28. 1924 INVZ/VTOR Patented Oct. 20, 1925.

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Be it known that 1,: ALB-110mm Vionron ng Fi hing ets in, i th an ight, o

wh ch the fol owing is 'e pe fieeti n,

In mari ime fish ig n gen r ly appl e two methodsot steam' trayvla'gefthje one. method is carried out by theiyoke net or I gengui method which is dra ge mm h front by tw hoe'ts, and the other by; the trap netg or otter-trawl rirawn by t s ingl elhon t The opening, and consequently the move ment of the yoke net or .gnnguif? isj d eten mined, as regards th wic fl i ,by th di ta apa of h two boat end is, s r gard the height, by the buoys 0r floater Theopenng' the rap n o m n-t awl s. imi ed nv idth b th dista ce epex te the traps,

- to which 1: e net i a taehed @ndfm height.

y th same h ight of the tra s.

Now it frequently ,oomlrs shengswe l the trep en ejb mping nd de net-j e p-en. prigh pesition which 1.

' ne e sary t assu t the net a pening e responding to their height Qn theether end the res stance. ,QPP to t e re n eff it by't tram dr in n the hed f ee need in' helfeese offl'a ge I tra Wlers, the intervention pf a} relatively,

pow rf mot ve f rce end in eonseq en eie large consumption 01 fuel. f j H 4 The yoke gives a ge y fi d herif he panel net, but this advantage dees not 1 Pensnte fo v t e i o ve ien th X i 11 sent iover he l t r nd beeause of he k e of two-boats insteadof one-only,

In order to increase theyield of the settertrawl, arrangements have been yprDPQsed 1 h h the net i e d be ng moun ed e v en the Pe e1 e di tan d frm. the

letter, to whichtheyqare conneoted by low ering arm which ssure their opening in Wid h Wh le th Penihg. 1 he ght is a 811F961, by th fleaens; thu i im l ly the yoke net. These arrangements appear to me ts- -withen nevertheles fi e m Opening Qiwfihe fif in theQtwo ireoti ons we .su fieiene extehtend they he ih "in en eeien ef of empl tjing the hnndljng fth'QIlgiQQ- I e J V pr eenhih e ti n freletes to h mg n ts whieh evereehee ,t e aeetnee g ee etter-re uhs than th -P evi us @Whfiflfi p rtions-by, egulating: thelheight t the,

hyesls-hrihg :theiepenihg ,e he netslh A e d helgh to ne easethe ield inlarg e p1 5 die p n n panels" Moreove th s, 1 ehre igeihen ensu e :1 in ethe zw ys the maiht he hee 0 the op nin mthe verneel pesinon and n :the e e ithewhieh s not limiee "or Meanings, FRYAITGEV z I traw er the, eomp ehberween t eanet endithg bottom.- E rthefnzthe err hgementreguletesi 1 this st; 111 ordem assure the dlagging; 0 he 16? 01. hh' QbiQm 'f 'r chfighiriggflat' eerehin ifi hwhieh do n tlive ehtheibbt eflm The and beer of th e 3m 1s "thusrei-lgss f pi hnr th motive Powel ons derably A oonstl'fuctlongl' embodiment .o-iflthe in;

VE IJlF QI i shown byea y, of ezgmnple in hmompenying drawing, in, whlch Fig te -1 inst-a fret leratmnnfe.

ef'the appa atus; when With its e'Ii 'Q able lead b lla t- Erie-S12 5 e l idef ewe ig: 3 shows p an-of thelsernelpanelg rig i 'hhwse pert plenef the renewable helr es F g- 5 she ts ehv a sma er seele an ele= when elfhe hole e -hhetw gp he swhi h h IeP-P re s 1 Fig; 6 Shows fcqr responding plan. Figs; 8 nndfi showreg peet v yf'e .frehhe fiwhfp en e sideriiew, a en? der ide 1 plehii oi as modifiedj hstruc-,

' tionnfthe counterwei hts A i die ed in. theldihgmmthe where tells pr e'e We Si. v ahe-''ncle ili eret A an B KE- s 5 and 6) whi h are. made W v he, p a e- 1 ,i ymm h eel el tive Lt-e y i f l o the-Who e ehdae h etedft it weigh s Child Dh v w Ash -edline'similarmen nee bel w ee' h elf th membe pon which they 1 rhe evisei theih. pu l? the Yerbieel 1i 1 OI I r Each of hers A. 21 115 comprises a wooden pan l a ,wh eh is made la eu ided te fiee b hes ih gihreugh th h r zont l axis oi; he pan l eerr l Ward oi its vertieel 3155, Th" .t din l ,phmlleligle 'flei th obhqu l fh m hippie-hob 9 m nd: d h heushelmehher new trienguler peh i rh hle er front .wellaehd en Wh -Qh chain ,or tme en e ble d conneet the .bra keha bythezt Metell thev orifice b. It is retained by a steel wire 7' guided by a pulley Zc mounted on the fixed panel a; the length of this wire 7' whose free end is fixed to the panel, is determined in such a way as to limit and to vary the amplitude of the angular displacement of the panel h. Finally an appropriate float Z fixed at the upper part of the rear side of the panel a, maintains the structure in the vertical posit on when 'enterlng water. I

The member 1s completed by a counter weight on, of cast iron or lead, upon which the front face.

is fixed an iron-hook a shaped into a vertical eyeibolt 0 on the upper surface of the counterweight m, and a-horizontal eye bolt p on The counterweight we also carries a third eye bolt a secured on the rear end and it,is ballasted by removable sole pieces 1", of varying number disposed beneath the counterweight m, with which they are rendered integral by bolts 8 furnished with screw If which have their bearings on the upper surface of the counterweight. Thislatter thus constructed, is connected to the fixed panel a, by a cable 14' attached at oneend tothe lower eye bolt 9 of the panel,

and the other end to the vertical eye'bolt 0 of the counterweight The arrangement, consists, as abovestated,

of two members simi-lar to that just described andwhich are placed symmetrically relative to the vertical axis of the whole. Eachchain or cable, web-shaped in order to assure the traction, comprises an arm d, attached to the double triangular suspension 0 of eachof the panels 0;, and an arm '1) whose attachment end is formed by the horizontal eyebolt p of the stirrup a of each of the counterweights. The adjustment of these' arms is regulated by the height which it is desired to give to the net, I,

.Thegmounting of the net :0 is effected by attaching its head cord orfioatcord y] tothe higher eye-bolt f of-the'panels a, and its shoulder 'or groundcord '2 to'the rear eye bolts 9 of the counterweight. Throwing out I of the arrangement into the water and the withdrawal of same is effected in the same 7 manner as-for ordinary nets.

, The netbeing arranged as above/stated between the two symmetrical members each consistingof a double panel and a counterweight, its distention in'width is produced by the traction effort, and the articulated panels, called'the depth panels, in. opening underthe pressure of the apron of water which flows through the orifice of the fixed panel, 'causing the ascending movement which raises the height of the opening of the net. This height is variable and corresponds to the length of the steel cables a conmeeting the panels to their respective counterweights, these latter also ensuring. the upright position of the whole and, in the case of trawling, the contact with the sea bed. i'

The numerous advantages presented by" the extending device will be readily "seen. i

from what has been stated above and which may be applied to all kinds of fishing nets. The height of the opening of the net being no longer subordinate to that of the panels,

may be regulated at will and raised to its maximum by regulating the length ofthef cables u corresponding to the dimensions of the net, which may thus be greatly increased insize. I

' Moreover, as the apparatus may be ballasted at will, it is easy to effect the adjust-' ment such as that for 'trawlers and theneti more orless touches the bottom according to the nature'of the fish: it is desired to. I catch; the resistance being less, there results an appreciable diminution of the wear and tear of the net and 1n the motlve power requlred, so economizing fuel.

.On the other hand, the bumps which arepanels anddo not hinder theshipping of sistance which. they offer to the'='jmotivc power in order'to obtain the maximum return without increasing the consumption of fuel. To do this, the removable sole pieces are replaced by small pulleys for rollers called diabolos which are lighter than the sole pieces and are sea bed. I

In this case, the sole pieces 7, whichwere fixed below the counterweights m, are're' moved, as well as the bolts which hold them, and these latter are replaced by thefbolts l' as shown in Figs. 7 to 9, of the same diameter but shorter. At the lower extremity of each of two bolts Z is secured a bracket 2 which is level with the underside'of the counterweight and which carries the @2 19 Of intended to "roll on the a pulley or roller 3 called a diabolo. The whole formed by the bolt 1, bracket 2 and the diabolo 3 is held in position by a nut 4: which is screwed on to the screw thread of the bolt and bearing on the upper surface of the counterweight.

corresponds to the motive power to be furnished, and also a better yield to that from other existing arrangements.

On the other hand, the angle of the oblique section m of the side face of the counterweight m is formed so, as to be extended by an iron protecting plate 5 intended to prevent the introduction of. hard foreign bodies in the rotary members of the rollers, which bodies might oppose the forward movement of the said rollers in the direction of traction, as indicated in dot and dash lines in Fig. 7

It is understood that the arrangement is given only by way of example, and that the details of working, accessories, materials and dimensions may vary according to requirements without deviating from the principle of the invention.

Then it is especially required to use the improved arrangement for very deep nets, the arms 1) of the webbed portion, used for dragging the counterweights m are sup pressed and, in order to ensure a better trac- 7 tion, the head cable is secured to the lower extremity of the panels 71. forming depth rudder. The counterweights are then dragged by their respective panels. These latter thus drag along the whole net whose points of attachment'on the said panels vary with the weight of the net and the kind of fishing to be carried out.

I claim:

1. A device of the character described comprising a pair} of symmetrically disposed panels, counterweights, cables adustably connecting thcpanels and the counterweights, a net disposed between the pan els, cables connecting the panels to the head rope of the net and the counterweights to the ground rope of the net; each of said panels having a quadrangular orifice, the

transverse sides of the orifice being'parallel to those of the panel and the longitudinal sides being at inclination to those of the panel, this arrangement of the elements constituting means for keeping the nets opened both in width andheight when the net is being trawled.

2. A device of the character described comprising a pair of fixed symmetrically disposed panels, counterweights, cables adjustably connecting the panels'and the counterweights, a net disposed between the panels, cables connecting the panels to the head rope of the net and the counterweights to the ground rope of-thenet, each of said panels having a quadrangular orifice, the

transverse sides of the orifice being parallel to those of the panel and the longitudinal sides being at inclination to those of the panel, this arrangement of the elements constituting means for keeping the nets opened. both in width and height when the net is being trawled, an articulation on therear side of the fixed above panels and parallel to the upper inclined. side thereof, an adjustable lozenge-shaped panel hung upon said articulation, a cable connecting the lozenge-shaped panel and the front face of the fixed panel, this constituting means for balancing and regulatingthe depth of the net, as stated.

ALPHONSE VICTOR ALEXANDRE ROBERT. 

